reallyme-codec

reallyme-codec is the recommended Rust entry point for the ReallyMe Codec workspace. It provides identity encoding utilities without pulling in signature, AEAD, KEM, or password-hashing implementations.

Use this crate when a resolver, service, or tool needs key and content encodings but does not need cryptographic operations. The supported surface is algorithm-agnostic: PEM armor, base64/base64url, lowercase hex, multibase, multicodec, multikey, canonical CBOR/DAG-CBOR helpers, and JSON Canonicalization Scheme helpers.

Install

[dependencies]
reallyme-codec = "0.2.1"

The default feature set enables every codec family. Consumers that need a smaller dependency surface can select only the families they use:

[dependencies]
reallyme-codec = { version = "0.2.1", default-features = false, features = ["base64url", "multikey"] }

Quick Start

use reallyme_codec::base64url::{base64url_to_bytes, bytes_to_base64url};

fn round_trip() -> Result<(), reallyme_codec::base64url::Base64UrlError> {
    let encoded = bytes_to_base64url(b"hello");
    let decoded = base64url_to_bytes(&encoded)?;
    assert_eq!(decoded, b"hello");
    Ok(())
}

Multikey support treats keys as opaque public bytes plus a multicodec prefix. Algorithm-aware key parsing, signing, verification, and JWK envelopes live in the crypto layer that consumes the decoded bytes.

DTOs that carry byte fields as unpadded base64url strings can enable the serde feature and use reallyme_codec::base64url::serde_bytes or reallyme_codec::base64url::serde_option_bytes.

Features

• base64
• base64url
• cbor
• hex
• jcs
• multibase
• multicodec
• multikey
• pem
• serde

Package Contract

ReallyMe Codec is one cross-language codec contract for identity data. The publishable Rust leaf crates exist for dependency hygiene, implementation modularity, and crates.io dependency resolution. They are support crates released in lockstep with reallyme-codec.

Rust consumers should usually depend on this umbrella crate. Direct use of a leaf crate is appropriate only when the consumer deliberately needs a smaller primitive surface and accepts the same lockstep ReallyMe Codec release line.